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Virtualization

ID	Contact Title	Contact Name	Country	Rating


1	Sales Agent	Antonio Moreno	USA	1 2 3 4 5
2	Sales Representative	Paul Henriot	Argentina	1 2 3 4 5
3	Accounting Manager	Georg Pipps	Brazil	1 2 3 4 5
4	Sales Consultant	Pascale Cartrain	Italy	1 2 3 4 5
5	Sales Representative	Antonio Moreno	England	1 2 3 4 5
6	Accounting Manager	Antonio Moreno	Bulgaria	1 2 3 4 5
7	Sales Consultant	Paul Henriot	Germany	1 2 3 4 5
8	Sales Agent	Paul Henriot	Spain	1 2 3 4 5
9	Sales Agent	Hanna Moos	Brazil	1 2 3 4 5
10	Accountant	Elizabeth Lincoln	USA	1 2 3 4 5
11	Marketing Assistant	Howard Snyder	USA	1 2 3 4 5
12	Marketing Manager	Georg Pipps	Austria	1 2 3 4 5
13	Accounting Manager	Georg Pipps	France	1 2 3 4 5
14	Accountant	Paul Henriot	England	1 2 3 4 5
15	Sales Representative	Elizabeth Lincoln	Spain	1 2 3 4 5
16	Sales Consultant	Paul Henriot	Germany	1 2 3 4 5
17	Sales Representative	Pascale Cartrain	Bulgaria	1 2 3 4 5
18	Marketing Assistant	Elizabeth Lincoln	Argentina	1 2 3 4 5
19	Sales Associate	Matti Karttunen	Bulgaria	1 2 3 4 5
20	Marketing Manager	Matti Karttunen	England	1 2 3 4 5
21	Sales Consultant	Matti Karttunen	England	1 2 3 4 5
22	Sales Representative	Georg Pipps	Germany	1 2 3 4 5
23	Owner	Pascale Cartrain	Argentina	1 2 3 4 5
24	Sales Representative	Paul Henriot	England	1 2 3 4 5
25	Owner	Pascale Cartrain	USA	1 2 3 4 5
26	Sales Manager	Howard Snyder	Austria	1 2 3 4 5
27	Owner	Antonio Moreno	England	1 2 3 4 5
28	Accountant	Pascale Cartrain	Italy	1 2 3 4 5
29	Sales Representative	Pascale Cartrain	Spain	1 2 3 4 5
30	Accountant	Georg Pipps	Brazil	1 2 3 4 5
31	Marketing Manager	Pascale Cartrain	France	1 2 3 4 5
32	Sales Consultant	Hanna Moos	Brazil	1 2 3 4 5
33	Accountant	Hanna Moos	Argentina	1 2 3 4 5
34	Sales Associate	Georg Pipps	Brazil	1 2 3 4 5
35	Marketing Manager	Jaime Yorres	Spain	1 2 3 4 5
36	Accounting Manager	Georg Pipps	Spain	1 2 3 4 5
37	Sales Agent	Jaime Yorres	Austria	1 2 3 4 5
38	Sales Agent	Howard Snyder	Italy	1 2 3 4 5
39	Marketing Assistant	Jaime Yorres	England	1 2 3 4 5
40	Sales Manager	Georg Pipps	France	1 2 3 4 5
41	Marketing Manager	Howard Snyder	Brazil	1 2 3 4 5
42	Sales Agent	Antonio Moreno	Austria	1 2 3 4 5
43	Sales Representative	Paul Henriot	England	1 2 3 4 5
44	Accounting Manager	Matti Karttunen	Italy	1 2 3 4 5
45	Sales Representative	Elizabeth Lincoln	Italy	1 2 3 4 5
46	Sales Representative	Matti Karttunen	Italy	1 2 3 4 5
47	Marketing Assistant	Hanna Moos	Austria	1 2 3 4 5
48	Sales Representative	Antonio Moreno	Brazil	1 2 3 4 5
49	Marketing Assistant	Jaime Yorres	USA	1 2 3 4 5
50	Sales Consultant	Paul Henriot	Argentina	1 2 3 4 5
51	Accounting Manager	Pascale Cartrain	Austria	1 2 3 4 5
52	Marketing Manager	Patricio Simpson	Italy	1 2 3 4 5
53	Sales Representative	Matti Karttunen	Spain	1 2 3 4 5
54	Sales Manager	Elizabeth Lincoln	Spain	1 2 3 4 5
55	Sales Manager	Howard Snyder	USA	1 2 3 4 5
56	Sales Consultant	Jaime Yorres	Germany	1 2 3 4 5
57	Sales Manager	Hanna Moos	England	1 2 3 4 5
58	Owner	Elizabeth Lincoln	Austria	1 2 3 4 5
59	Sales Associate	Patricio Simpson	USA	1 2 3 4 5
60	Sales Consultant	Elizabeth Lincoln	Germany	1 2 3 4 5
61	Sales Manager	Patricio Simpson	France	1 2 3 4 5
62	Owner	Paul Henriot	Italy	1 2 3 4 5
63	Marketing Assistant	Patricio Simpson	Argentina	1 2 3 4 5
64	Sales Representative	Jaime Yorres	Austria	1 2 3 4 5
65	Sales Agent	Elizabeth Lincoln	France	1 2 3 4 5
66	Sales Agent	Patricio Simpson	Bulgaria	1 2 3 4 5
67	Marketing Assistant	Georg Pipps	England	1 2 3 4 5
68	Sales Associate	Jaime Yorres	USA	1 2 3 4 5
69	Marketing Manager	Matti Karttunen	Spain	1 2 3 4 5
70	Accountant	Hanna Moos	France	1 2 3 4 5
71	Sales Associate	Georg Pipps	France	1 2 3 4 5
72	Accountant	Patricio Simpson	Germany	1 2 3 4 5
73	Marketing Assistant	Georg Pipps	USA	1 2 3 4 5
74	Marketing Manager	Georg Pipps	Austria	1 2 3 4 5
75	Sales Associate	Antonio Moreno	England	1 2 3 4 5
76	Sales Associate	Patricio Simpson	Argentina	1 2 3 4 5
77	Marketing Assistant	Jaime Yorres	Spain	1 2 3 4 5
78	Sales Associate	Antonio Moreno	Argentina	1 2 3 4 5
79	Sales Associate	Pascale Cartrain	USA	1 2 3 4 5
80	Sales Consultant	Jaime Yorres	Austria	1 2 3 4 5
81	Marketing Manager	Elizabeth Lincoln	Italy	1 2 3 4 5
82	Marketing Manager	Elizabeth Lincoln	Brazil	1 2 3 4 5
83	Marketing Assistant	Matti Karttunen	Germany	1 2 3 4 5
84	Sales Associate	Matti Karttunen	Bulgaria	1 2 3 4 5
85	Sales Consultant	Patricio Simpson	USA	1 2 3 4 5
86	Marketing Assistant	Jaime Yorres	Brazil	1 2 3 4 5
87	Sales Associate	Paul Henriot	Spain	1 2 3 4 5
88	Sales Agent	Jaime Yorres	Spain	1 2 3 4 5
89	Accountant	Georg Pipps	Argentina	1 2 3 4 5
90	Accountant	Paul Henriot	Bulgaria	1 2 3 4 5
91	Sales Manager	Patricio Simpson	Italy	1 2 3 4 5
92	Sales Agent	Hanna Moos	Italy	1 2 3 4 5
93	Sales Associate	Hanna Moos	Germany	1 2 3 4 5
94	Sales Associate	Elizabeth Lincoln	USA	1 2 3 4 5
95	Sales Representative	Matti Karttunen	France	1 2 3 4 5
96	Marketing Assistant	Howard Snyder	Spain	1 2 3 4 5
97	Accounting Manager	Howard Snyder	Austria	1 2 3 4 5
98	Owner	Georg Pipps	Italy	1 2 3 4 5
99	Sales Agent	Georg Pipps	England	1 2 3 4 5
100	Accounting Manager	Pascale Cartrain	Austria	1 2 3 4 5


...271 272 273 274 275 276 277 278 279 280 ... Item 270001 to 271000 of 300000 Page: of 300 GoPage size:

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Columns
- ID
- Contact Title
- Contact Name
- Country
- Rating

About this demo
C#
VB
Download demo code files
Isolate this demo as a stand-alone application

RadGrid's virtualization feature allows you to handle hundreds of thousands of rows without negatively impacting the user experience. The control achieves this thanks to its ItemsPerView property allowing you to control the number of items loaded at a time. Users can now scroll, as well as show, hide, resize and reorder columns without any waiting time.

This demo shows how quickly Telerik's ASP.NET DataGrid can handle user interactions with 300,000 items. You can configure the component to allow scrolling through the entire data set or only through the current page by using EnableCurrentPageScrollOnly property,.

<%@ Page Language="vb" AutoEventWireup="false" CodeFile="DefaultVB.aspx.vb" Inherits="Telerik.GridExamplesVBNET.Performance.Virtualization.DefaultVB" %>

<%@ Register TagPrefix="telerik" Namespace="Telerik.Web.UI" Assembly="Telerik.Web.UI" %>
<%@ Register TagPrefix="qsf" Namespace="Telerik.QuickStart" %>
<!DOCTYPE html>
<html xmlns='http://www.w3.org/1999/xhtml'>
<head runat="server">
    <title>Telerik ASP.NET Example</title>
    <link href="styles.css" rel="stylesheet" />
</head>
<body>
    <form id="form1" runat="server">
    <telerik:RadScriptManager runat="server" ID="RadScriptManager1" />
    <telerik:RadSkinManager ID="RadSkinManager1" runat="server" ShowChooser="true" />
    <telerik:RadAjaxLoadingPanel runat="server" ID="RadAjaxLoadingPanel1"></telerik:RadAjaxLoadingPanel>
    <telerik:RadAjaxPanel runat="server" ID="RadAjaxPanel" LoadingPanelID="RadAjaxLoadingPanel1" CssClass="demo-container">
        <telerik:RadGrid RenderMode="Lightweight" ID="RadGrid1" runat="server"  AutoGenerateColumns="false"
            AllowSorting="true" GroupingEnabled="false"
            EnableHeaderContextMenu="true" AllowPaging="true" PageSize="1000" OnNeedDataSource="RadGrid1_NeedDataSource">
            <MasterTableView TableLayout="Fixed">
                <Columns>
                    <telerik:GridBoundColumn UniqueName="ID" HeaderText="ID" HeaderStyle-Width="50px" DataField="ID"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="ContactTitle" HeaderText="Contact Title" HeaderStyle-Width="150px" DataField="ContactTitle"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="ContactName" HeaderText="Contact Name" HeaderStyle-Width="150" DataField="ContactName"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="Country" HeaderText="Country" HeaderStyle-Width="100px" DataField="Country"></telerik:GridBoundColumn>
                    <telerik:GridRatingColumn UniqueName="Rating" HeaderText="Rating" HeaderStyle-Width="100px" DataField="Rating"></telerik:GridRatingColumn>
                </Columns>
            </MasterTableView>
            <ClientSettings ReorderColumnsOnClient="true" AllowColumnsReorder="true" ColumnsReorderMethod="Reorder">
                <Virtualization EnableVirtualization="true" InitiallyCachedItemsCount="2000"
                    LoadingPanelID="RadAjaxLoadingPanel1" ItemsPerView="100"/>
                <Scrolling AllowScroll="true" UseStaticHeaders="true" ScrollHeight="500px" />
                <Resizing AllowColumnResize="true" />
            </ClientSettings>
            <PagerStyle Mode="NextPrevNumericAndAdvanced"></PagerStyle>
        </telerik:RadGrid>
    </telerik:RadAjaxPanel>
    </form>
</body>
</html>

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